87997-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87997-33-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,9,9 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87997-33:
(7*8)+(6*7)+(5*9)+(4*9)+(3*7)+(2*3)+(1*3)=209
209 % 10 = 9
So 87997-33-9 is a valid CAS Registry Number.
87997-33-9Relevant academic research and scientific papers
AN ATTEMPT TO ELUCIDATE THE CONSTITUTION OF BRYAQUINONE BY SYNTHESIS
Kolonits, P.,Major, A.,Nogradi, M.
, p. 367 - 374 (2007/10/02)
4,9,10-Triacetoxy-3,8-dimethoxy-6H-benzofurobenzopyran (13) was synthesized in 13 steps and found to be non-identical with the leucoacetate of bryaquinone, a constituent of yet unknown structure of Brya ebenus.
